Improvement in type-writing machines



O. L. SHOLES. Type-Writing Machine.

No. 199,382 Patented Jan. 22,1878.

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N-PETERS, PHOTOLITHOGRAPHER, WASHINGTDN, 0 CV Jaw)? 360 UNITED STATESPATENT "QFFTOE,

'o.- LATHAM SHOLES, or MILWAUKEE, WISCONSIN, ASSIGNOR TO THE TYPE WRITERCOMPANY I a g -IMPROVEMENT INTYP E-WRITING MACHINES.

Specification forming part of Letters Batent No. 199,382, dated January22,1878; application filed January 2-, 1874., I

- To all whom it may concern Be it'known that I, O. LATHAM SHoLns, ofthe city-and county of Milwaukee, and State of Wisconsin, have inventedImprovements in Type-Writing Machines; of which the following is aspecification:

The nature of the invention is in combin ing a type-bar of a typeWriting machine, which type-bar has a trunnion or journal on each side,with an annular circular disk, which disk has a journal-bearing groovein its upper surface, and a radial vertical slot through its innerperiphery or inner edge; and in combining a type-bar of a type-writingmachine, which type-bar has a trunnion or journal on each side, with anannular circular disk, which disk has a journal-bearing groove in itsupper surface, and a radial vertical slot through its inner periphery orinner edge, and with a partition or stop across the journal-bearin ggroove of such disk.

The accompanying drawing and following description fully illustrate theinvention.

The figures of the drawing represent views as follows: Figure 1, a viewof a type-writing machine, and Fig. 2 a view of part of the annularcircular disk.

The description is as follows: A represents the side plates of the mainframe of a typewriting machine; B, the top plate on the side plates A;0, an annular circular disk within an aperture in the top plate B; D, aseries of radial vertical slots through the inner periphcry or inneredge of the disk 0; E, a series of tongues or arms made by the slots Din the disk 0; F, a journal-bearing groove in the upper surface of eachdisk-arm E; G, a partition or stop across each journal-bearing groove F;H, a type-bar within each slot D, and with a trunnion or journal in thegroove F of each contiguous arm E of the disk 0; I, a series of leverspivoted near the bottom at the hind part, and extended through to thefore part of the main frame A B; J, a key on the fore end of each leverI; K, a connecting-wire attached to each key-lever J I, and to thecorresponding type-bar H; L, a long shaft or main axle across over themiddle of the disk 0, in bearings attached to the top plate B; M, acylinder on and attached so it may turn with and slide along the mainaxle L; N,-a ratchet-wheel on near wheel N P, the vibratory frame,pivoted" in line across over the key-levers J I; Q, a pul- 1 leyattached to the end of the main axle L, so it may turn independently inone direction,

but engage and turn with the axle in the reverse direction; It, a weightand cord attached to the pulley Q; and S, an inking-ribbon attached tospools within the main frame A B, and extended up through the top plateB, and

across over the middle of the disk 0, under the cylinder M.

The function of the annular circular disk 0 is to hold the type-bars Hin the same unvarying relative position. The disk is ametal plate, whichwill not warp and twist, and the type-bars attached to it mustnecessarily be held in the same relative position.

The function of the grooves F is to receive and'bear thetrunnion-journals of the type-bars H. The series of grooves isconcentric, and necessarily each is exactly the same distance from thestriking-point at the center, so that the type-bars, if of the samelength, must necessarily strike, when vibrated, at the same place;andthe trunnion-journals, set in the journal-bearing grooves F of thedisk 0, must necessarily keep each type-bar H in the same relativeposition.

The function of the partition or stop G is to prevent each type-bar Hfrom moving in the direction of the line of its journal-bearin g grooveF. In the drawing not only is the series of the journal-bearing groovesF concentric, but each separate groove F is in itself concentric, andthe line of the combined grooves is therefore a circle.

It is not necessary that each separate groove should be concentric; butit is a convenient form in which to make them, and insures the seriesbeing concentric, and therefore equidistant from the center; and when somade, ifthe trunnions H are all of the same length, each a chord of anequal arc of the concentric line, then only one stop, G, is necessary.In either direction the continuous trunnion H will strike against thestop G, and be held from onejend of the mainaxle L; O, the letter-spaceratchets, attached "and pivoted so they may work in the ratchet-I movingin that direction, and the other end of each separate'trunnion, ineither direction, becomes in itself a stop for the next contiguoustrunnion to strike and stop against, and so on; but it is, perhaps,better to put a stop, G,

across the groove F of every disk-arm E, so a as to isolate and makeeach type-bar andits trunnion H independent of all the others. The

most perfect freedom and accuracy combined is, perhaps, thus bestinsured. v

The combination of two ratchets, attached together side by side, pointedpractically in the same direction, and pivoted so. they may vibrate inthe same plane in one direction, but one pivoted separately, so it mayvibrate independently in a plane at a right angle to that of; thejointvvibration, so they may=.vibrate in parallel planes in, thereversedirection, with only one series of ratchet-teeth and notches, andwith the key-levers,.vibratory frame, papercarriage, andplaten of atypewritingmachine,, and the. combination of a horizontal bar, attachedand pivoted so it may vibrate across in, front of; the key-levers, withthe vibratory frame and letter-spacev ratchets of a type-writingmachine, form no part of this invention; and the combination of aslotted disk with the pivoted type-bars of atype-writing machine is acommon and well-known de vice; but the improvements which do constitutethe invention, and which I therefore claim are as follows: 1. Thevcombination of a type-bar of a typewriting machine, which type-bar hasa trunnion or journal on each side, with an annular circular, disk,which; disk hasua journ al-bearing groove in its upper suface, and aradial vertical slot through its inner periphery or inner edge,substantially as described.

2,. The combination of a type-bar of a typewriting machine, whichtype-bar has a trunnion or journal on each side, with an annularcircular'disk, which disk has .a journalbean ing groove in itsuppersurface, and a radial vertical slot through its inner periphery orinner, edge, and with a partition or stop across the journal-bearinggroove of such disk, substantially as described. r.

-\ ,0. LATHAM SHOLES.

-Witnesses: I 1 i o 11.0. BUNKEL, A. S. LANDGUT,

